Issue description
The device displays a false collision warning when you are mapping outdoors when the environment is very cold, foggy, or with small raindrops. The freezing/humid weather can cause drops of water or ice to condensate on the laser glass surface, creating perceived obstacles which can trigger collision warnings
Troubleshooting procedure
1 Check the environmental operating conditions
Check that you are operating the device within the specifications of the environmental operating conditions.
2 Check the device indoors
Bring your device back to the room temperature and let the surfaces dry for some time. Start a scanning indoors and observe if the collision warnings still exists.
If the collision warnings no longer display indoors, this indicates the hardware and software are in a good status.
If collision warnings repeatedly display indoors, contact NavVis support
Note: An operating temperature of 0°C (32°f) with a maximum -30°C (-22°f) is achievable when the following is true:
The device has been switched on for 20 minutes at a minimum temperature of 0°C (32°f).
The duration of scanning is kept to a minimum of 20 minutes.
The atmospheric conditions are calm (no wind).
Reference
FAQ
What issue does the device experience in cold or humid weather?
The device displays a false collision warning when mapping outdoors in very cold, foggy, or rainy conditions due to condensation on the laser glass surface.
How can I check if the device is operating within the correct environmental conditions?
You should verify that you are operating the device within the specified environmental operating conditions.
What should I do if the device shows collision warnings indoors?
If collision warnings repeatedly display indoors, you should contact NavVis support.
What steps should I take to troubleshoot the device?
First, check the environmental operating conditions. Then, bring the device indoors to room temperature and let it dry before scanning again.
Is it possible to operate the device at temperatures below freezing?
Yes, the device can operate at temperatures as low as -30°C (-22°F) if it has been switched on for at least 20 minutes at a minimum temperature of 0°C (32°F) and scanning is kept to a minimum of 20 minutes under calm atmospheric conditions.